Sorry, I wasn't around to check. This was with the candle on the dash, windows closed. I'm sure it would be MUCH hotter in many parts of the U.S. under similar circumstances. But storing candles in the trunk might not be so bad, no glass and probably easily 20F+ cooler. I guess the idea is to keep the UCO candles wrapped in plastic, and maybe stuff them inside a light cardboard roll so they roughly keep their shape.

Now to sacrifice the Viagra-philic specimen to the burn time test...